Lack of Association of A/NJ/76 (Swine Flu) Vaccine and Polymyositis

Abstract
There is no indication of an increase in the number of cases of polymyositis/dermatomyositis observed and reported among the 43.3 million civilians who received the A/NJ/76 (swine flu) vaccine from October 1 to December 16, 1976, in the United States. Among nearly 1 million Army and Navy personnel who received the vaccine, there was no increase in the incidence rate of polymyositis/dermatomyositis. Furthermore, there was no indication of an increase in the number of cases of polymyositis/dermatomyositis diagnosed at the Mayo Clinic, the Cleveland Clinic, the Cleveland Metropolitan Hospital or the Massachusetts General Hospital during or following the national immunization program in 1976.

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